what do you have, which one you would recommend? aluminum is a lil more $, I know the cars revs faster and all and its less draggin for drivetrain components, but how about the steel ones,
pros and cons?
what do you have, which one you would recommend? aluminum is a lil more $, I know the cars revs faster and all and its less draggin for drivetrain components, but how about the steel ones,
pros and cons?
aluminum is lighter than steel
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steel, you want something strong b/c when you get up in revs and are driving fast, the steel momentum helps deliver continuous power without added strain on the engine/ tranny.
I went with billet alum. I've had billet steel and they work well, it seemed to launch a lot harder with steel. I went with aluminum because I found a killer deal on one and it frees up a little hp. Most of the people I've talked to about it say that billet steel is what I should have gone with. I honestly like the billet aluminum just fine and I have no problems on the street or on the track.
steel, you want something strong b/c when you get up in revs and are driving fast, the steel momentum helps deliver continuous power without added strain on the engine/ tranny.
The steel flywheel only helps at launch, it helps reduce the risk of bog because it has significantly more kinetic energy than the aluminum flywheel. After launching the steel flywheel will only cause more parasitic loss.
If you hit the strip a lot I can see the steel flywheel being an advantage, but other than that aluminum all the way. You do know the stocker is aluminum right?
steel, you want something strong b/c when you get up in revs and are driving fast, the steel momentum helps deliver continuous power without added strain on the engine/ tranny.
Not exactly true. The purpose of a Flywheel is to store energy and to smooth the engine at idle. A heavy flywheel will help the car overcome inertia when the car is stationary but once it locks with the clutch all the energy is expended and will be nothing but a drag on the engine having to accelerate all that rotating mass. A lighter flywheel will have the opposite effect. It will allow the engine to accelerate the car faster thru every gear. The effects of a lighter flywheel will actually register more power on a dyno for this reason.
Strength has nothing to do with the function of the flywheel.
great thread, as I am in the same boat, and trying to make up my mind...leaning toward aluminum right now...even though I track the car once a month...
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For a supercharged engine, the added torque of the heavier steel flywheel is not needed. Aluminum is lighter and will help the engine rev faster. Typically, drag racers like the steel because when you are dumping the clutch - steel will typically get you going faster (a tenth or two on the 60ft?). Autocross and daily driver wise, the aluminum revs faster and is prefered by this crowd.
I got an F1 chrome molly steel fly. There are circles milled out to make it lighter. Its only like 14 lbs iirc. This is why i went steel:
I've seen this happen before but it is rare. Most people don't have any problems with the stock flywheel. That chome molly unit sounds like a nice piece. The stock flywheel weighs only 11 lbs. and should conduct heat way from the clutch real well. The only thing I don't like about it is that I can only be resurfaced once and genarally can't be rebuilt. I do hear McLeold can replace the friction surface though.
great thread, as I am in the same boat, and trying to make up my mind...leaning toward aluminum right now...even though I track the car once a month...
y'up, today i almost bought a fidanza steel f/w but something told me to hold off wait for friday (when clutch is getting replaced) and see if the stocker isn't that bad that it could be turned, if not, i'm throwing the extra $ for an aluminum f/w (im so glad lethal performance is like 10 mins away)
Last edited by 03snakeminated; 06-24-2009 at 08:50 PM.
im staying with steel. When you get stronger clutches that chatter, wait till you match it with a lighter flywheel, then it will really chatter..
That doesn't sound right. The flywheel and PP are connected directly to the crankshaft which means the chatter would be applied directly to the engine reciprocating mass backed up by 8 pistons pounding away producing all that work. The clutch disc is connected directly to the transmission input shaft (and is just sandwiched between the FW & PP) where the load resistance is being generated. They put springs in the disc to dampen chatter but I think the mass if the flywheel would have nothing to do with it. Maybe I'm missing something here
That doesn't sound right. The flywheel and PP are connected directly to the crankshaft which means the chatter would be applied directly to the engine reciprocating mass backed up by 8 pistons pounding away producing all that work. The clutch disc is connected directly to the transmission input shaft (and is just sandwiched between the FW & PP) where the load resistance is being generated. They put springs in the disc to dampen chatter but I think the mass if the flywheel would have nothing to do with it. Maybe I'm missing something here
You are correct to a point. A clutch that chatters, with our already light driveshaft then add a light flywheel you will get some chatter. I come from the 300zx and those chatter BAD with a lightweight flywheel. Alot of guys go back to the stock steel one and most of it goes away. :cheers:
You are correct to a point. A clutch that chatters, with our already light driveshaft then add a light flywheel you will get some chatter. I come from the 300zx and those chatter BAD with a lightweight flywheel. Alot of guys go back to the stock steel one and most of it goes away. :cheers:
my stock alum f/w clutch chatters a bit but it doesn't bother me a all, i just wonder with a different aftermarket if the chatters increases noticeably
my stock alum f/w clutch chatters a bit but it doesn't bother me a all, i just wonder with a different aftermarket if the chatters increases noticeably
Yeah, I have heard about alot of small chattering but nothing to bad. I haven't heard of anyone really tired of it and want to get rid of it. Its always " I can deal with it".
Yeah, I have heard about alot of small chattering but nothing to bad. I haven't heard of anyone really tired of it and want to get rid of it. Its always " I can deal with it".
can't be worst than the chatter my 04 srt4 produced with a clutchmaster 6 puck clutch in it, lol, talk about annoying
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